I have tried reading several solutions, but none of them work for me at the moment.
I want to copy the files present in the sd memory on my computer, but when
I call via adb / sdcard etc., it displays the internal memory of the device and not the SD
Related
I’m new to android´s app development; so far I was able to create text files on my device. The problem is when I try move the file to my PC I cannot find it. After research I now know that files saved in the internal memory are only available to the app and the external storage can be use to share files, but my device (moto G 1° gen) only have internal memory.
So the question is, is there a way to share files on my smartphone with my pc.?
Typically, devices with internal memory still have a partition set aside that emulates external storage. On any Android device I've had, the internal memory is mounted to /sdcard/ and if you insert an actual sdcard, it gets mounted to /sdcard2/. Anything you save in /sdcard/ should appear in Windows explorer when plugging the device in over USB.
Alternatively, you can also use adb to retrieve files outside of the /sdcard/ partition by using the command "adb.exe pull [source file] [destination directory(optional)]"
I am connected android device and PC via USB cable. My Internal SD Card location Path as /mnt/sdcard. But my External USB device path as /mnt/userdata1. I am try to use this code to find only the Internal SD Card Path Environment.getExternalStorageDirectory(). I am using this code to access only in the internal SD Card path. How to access the external USB Path.
For example Screenshot is here...
Example
In this example contains Internal Memory, External SD card and USB Storage. How to find this path ( Internal Memory, External SD card and USB Storage) programmatically. In this code Environment.getExternalStorageDirectory() is viewed files from all Internal Memory Files only. So how to access others path ( External SD card and USB Storage ) Please guide me with code. Thanks..
If I understand correctly, what you are calling "external" USB path is actually the mount point for your SD card on your computer. Most likely, your SD card has label userdata1. Therefore when it's mounted on the computer, it gets /mnt/userdata1 mount point. However this is not strictly necessary and it can be any mount point at all. In fact, if you connect it to another computer, it can easily be another mount point.
Because this path is determined by the computer operating system, you'll need to find this path on your computer (note that this can be different every time you connect your phone to your PC, so you'll need to do it every time).
From your question and path structure (/mnt/userdata1) I'm guessing you're using linux or some other unix version. Therefore you could run mount on your PC to see the list of the mounted devices. For example, here's the output on my mac:
$ mount
/dev/disk0s2 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
/dev/disk1s1 on /Volumes/ALEKS540 (msdos, local, nodev, nosuid, noowners)
Note the last line in the output - this is my connected android phone with the SD card mounted to the computer. On macs, the mount points are created under /Volumes instead of /mnt. Other than than, ALEKS540 is the label of my SD card, hence it's mounted this way.
Internally on the phone, it's still mounted as /mnt/sdcard.
From the point of view of Android, there may be three storage types:
Internal memory it's always mounted under / on the device and contains everything except the SD card and USB storage below.
SD card - this is referred to as "external storage" and is usually mounted as /mnt/sd, but not always. Environment.getExternalStorageDirectory() will return the path of SD card mount point.
USB storage - this is only supported on very few devices (those that support USB host mode for external storage). This will be mounted somewhere under /mnt, but the exact location will vary. You will need to use Android NDK to interrogate and iterate mounted devices to find the one you're after.
When I ran on View Pad7 used sdcard/night1/9472012051_346.mp3 with success.
If I prompt for the root directory from within the app I get /mnt/sdcard/, however Prompt(IsFileExist("/mnt/sdcard/night1/9472012051_346.mp3")); returns false.
Explorer app on tablet shows path as SD Card/night1/9472012051_346.mp3
Many tablets have their own internal memory, and this is what is mounted to /mnt/sdcard (which is symlinked to by /sdcard). In these cases, any external sdcard you install is typically at /mnt/external_sd instead
Im working on "mount ntfs sdcard"
That is problem:
- If i mount sdcard to another folder than /mtn/sdcard then my sdcard working find
- If i mount it to /mnt/sdcard then android not except it : " The SDcard is not currently mounted"
In adb shell i type mount command and see that my SDcard is mounted to /mnt/sdcard
But infact SDcard folder cannot accessable.
I think android doesnt except mount ntfs sdcard on /mnt/sdcard because it programed to mount vfat sdcard on /mnt/sdcard.
Now the question: where i can find mounting code or mounting procedure of android when we insert SDcard? i want to modify it to accept ntfs sdcard.
P/S: im on GB 2.3.6
This is a very specific question, I doubt you will get an answer here. You might want to try to locate it yourself from the source code which could be found here:
https://sites.google.com/a/android.com/opensource/download
I did some googling and found this:
http://cateee.net/lkddb/web-lkddb/NTFS_FS.html, you might need to modify it.
On Android, the mounting of the sdcard is managed by the vold daemon.
If you want a stable system, you likely need to either get vold to manage your custom mount, remove vold from the system and do it's entire job yourself, or somehow get it and your custom solution to stay out of each other's way.
Lots of custom ROMs have used vold in different ways - to partition an sdcard and add a unix-style filesystem for storing apps, to put an entire alternate android installation on an sdcard or tablet internal storage area, etc. You might get some ideas by looking at those, reading their development discussion history, etc.
I have an application that writes important data to the SDCard and encrypts it using AES, which later will be used by a desktop application. I have noticed that if I do not unmount the SDCard from the Settings menu sometimes the files don't get written at all, or are corrupted.
Is there anyway in Android 2.1 that I can unmount the SDCard programmatically? Because I'm pretty sure that from time to time the users will forget to do this, and I'll be the one fixing the problems and I really don't want this.
If this is not possible,what Linux command should I use to unmount the SDCard? Since the application will run on some tablets that have a rooted OS.
You should unmount what's using the sdcard in the proper order, for example
umount /mnt/sdcard/.android_secure
umount /mnt/sdcard
or, probably synchronizing the buffers with the filesystem would be enough
sync; sync